Dental implement.



No. 685,659. Patented Oct. 29, I90I.

G. M. WILLIAMS.

DENTAL IMPLEMENT.

(Application filed my 29. 1901.)

(No Model.)

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UNITE STATES PATENT OFFICE.

GILBERT M. WILLIAMS, OF MAYSVILLE, KENTUCKY. I

DENTAL IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 685,659, dated October 29, 1901 serial 110.62.394- (No model.) 7

To ctZZ whom it may concern:

Be it known thatI, GILBERT M. WILLIAMS, a citizen of the United States, residing at Maysville, in the county of Mason and State of Kentucky, have invented a new and useful Dental Implement, of which the following is a specification.

This invention relates to dental implements particularly adapted for use with a dental engine for grinding and polishing purposes, but can be employed for other purposes; and the object of the same is to provide simple and effective means for removablyholding grinding and polishing attachments of various shapes and natures on the terminal of a mandrel and prevent the same fromrotating while in use, whereby one mandrel may be employed to receive a number of different devices.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter described and claimed. 7

In the drawings, Figure 1 is a side elevation of a mandrel and removable attachment embodying the features of the invention. Fig. 2 is a longitudinal vertical section of the at tachment and the terminal of the mandrel engaged thereby. Fig. 3 is a transverse vertical section on the line 3 3, Fig. 2-. Fig. 4 is a detail perspectiveview of a socket used in the attachment. Fig. 5 is a side elevation of a mandrel embodying a slightly modified form of the invention and showing a-difi'erout form. of attachment. Fig. 6 is an elevation of the mandrel-terminal in its modified form, showing the attachment in longitudinal section and embodying the features of construction of the device shown by Fig. 5. Fig. 7 is a transverse vertical section on the line 7 7, Fig. 6.

Similar numerals of reference are employed to indicate corresponding parts in the several views.

The numerall designates a mandrel adapted to be fitted to the usual flexible revolving shaft of a dental engine, though it is obvious that it may be applied to other suitable co acting mechanisms. The free terminal 2 of the said mandrel is formed with a longitudinal slot 3 to provide two yielding or spring jaws 4-, the said slot opening outwardly through the end of said terminal. The outer portion of each jaw, at a suitable distance from the free end, thereof, is formed with a recess 5, the portion of each jaw between its recess and the free end thereof constituting a locking means and with the recess forms a firm detachable securing construction for engagement by the attachment 6. The attachment 6 is the grinding or polishing device and may be of any shape, dimensiou,-and ma terial, the attachment shown being one form of the well-known corunduin-point. -In the rear portion of the said attachment a socket 7 is mounted and secured against movement,

the said socket being provided with a dia-- ,metrically-disposed web 8, longitudinally extending the 'full length thereof, and near its outer end also provided with diametricallyopposed indentations 9 to engage therecesses oin the jaws 4. The interior of the socket corresponds in contour to that of the jaws,

and when the attachment is applied to the jaws it is securely held against accidental disengagement.

forth; but said jaws in thepresent instance each have an'outer projection 10 to fit incor responding recesses 11 in the interior of the attachment 12, the latter -being formed by rolling emery or other abrading material or otherwise constructing said attachment to provide a receptive socket therein with a diai 7 metrically-extending web 12.

receptive openingin the attachment to re movablyreceive the jaws might be varied in- This correlative construction of the jaws and socket/0r 9 definitely as long as the salient features o construction are embodied.

The locking means in part constructed in the socket or receptive opening of the attachment and in part located in the jaws pre vents the attachment from becoming acci-' dentally separated from the jaws or mandrelterminal, and when the jaws are in the attachment the web fits in the slot 3, and consequently the attachment is prevented from rotating on the mandrel. The yielding action of the jaws permits them to be snapped into place within the attachment and also withdrawn from the latter in an expeditious manner by the operator, and different shapes orcontours of attachments can be readily substituted for each other on the jaws to perform different kinds of-work.

As before indicated, the improved construction is particularly adapted for dental implements; but the same principle may be employed in tools used in other arts, and for this purpose changes in the form, size, proportions, and minor details may be resorted to without departing from the principle of the invention.

Having thus described the invention, what is claimed as new is 1. In an implement of the class set forth, the combination of a mandrel of rigid form having resilient jaws at one end only with a slot between them, and an attachment having a freely-removable application to the said jaws and formed with a receptive opening with a diametric web therein to respectively receive the jaws and enter the slot between the latter, the jaws and wall of the opening on opposite sides of the web having locking means to prevent the attachment from becoming accidentally separated from the jaws.

2. In an implement of the class set forth, the combination of a rigid mandrel having terminal resilient jaws with a slot between them, and an attachment freely removable from the said jaws and provided with a socket in one extremity to receive said jaws, said socket having a Web extending diametrically thereacross, the wall of the socket on opposite sides of the web being formed with recesses and the outer portions of the jaws projected to ,enter said recesses and form a lock to prevent the attachment from accidentally slipping off the jaws.

3. In an implement of the class set forth, the combination of a mandrel having terminal jaws with a space between them and indentations in the outer portions thereof, and an attachment having projections to engage said indentations and a web to enter the space between the said jaws.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in i the presence of two witnesses.

GILBERT M. WILLIAMS. YVitnesses:

THOMAS A. DAVIS, A. F. Woon. 

